七年级数学下册整式的加减法计算题 620.docx

1、七年级数学下册整式的加减法计算题 620 8 (3x27xyx)(4x2 xy8x) 7 3 5 (xy8y21)(x2xy4y25) 4 4 9 1 (xyy)(xyx2) 8 7 (7y5x8z2)(7y3x5z2) (2k22k)(7k2 k3) ( a28a6b)(5a24a5b) 9x2(8x26x6)(3x8) 6y2(9x2y)(9x27y2) 1 (2x24xyx)(3x26xy3x) 8 7 1 (xy8y21)(x2xy6y27) 6 8 1 9 (xyy)(xyx9) 4 8 (4y6x z2)(6y x4z2) (3k28k)( k29k6) (9a25a4b)(6a2

2、7a b) 6x2(3x26x4)(8x8) 2y2(4x2y)(2x24y2) 4 (9x26xyx)(6x25xy8x) 3 1 1 (xy6y21)(x2xy6y22) 4 7 1 6 (xyy)(xyx6) 3 5 (9y7x4z2)(3y4x6z2) (4k27k)(4k24k2) (2a29a b)(3a22a2b) 6x2(6x29x7)(3x2) 2y2(7x2y)(5x2 y2) 1 (4x25xyx)(6x27xy5x) 6 1 1 (xy7y28)(x2xy y29) 7 8 1 1 (xyy)(xyx5) 4 6 (8y9x3z2)(8y4x7z2) (2k23k)(

3、k27k6) (7a25a b)(8a27a3b) 8x2(7x23x6)(5x4) 9y2(7x2y)(7x2 y2) 5 (3x24xyx)(6x2 xy2x) 4 2 5 (xy9y22)(x2xy7y25) 3 4 1 1 (xyy)(xyx7) 5 6 (7y3x z2)(4y3x6z2) ( k25k)(6k25k3) (6a24a7b)(8a29a b) 8x2(3x28x4)(8x5) y2(2x2y)(9x25y2) 3 ( x27xyx)(5x29xy x) 4 3 4 (xy8y22)(x2xy y21) 4 5 6 1 (xyy)(xyx7) 5 3 (5y5x2z2)(3y x7z2) (5k23k)(9k29k5)